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Finding the Fourth Proportional to 455,218.60, 682,827.90 and 219,022.60

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Solution

The fourth proportional to 455,218.60, 682,827.90 and 219,022.60 is: 328,533.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,218.60 : 682,827.90 = 219,022.60 : x
  2. Step 2: Convert to fraction form
    455,218.60/682,827.90 = 219,022.60/x
  3. Step 3: Cross multiply
    455,218.60x = 682,827.90 × 219,022.60
  4. Step 4: Simplify right side
    455,218.60x = 149,554,742,010.54
  5. Step 5: Solve for x
    x = 149,554,742,010.54/455,218.60
  6. Step 6: Final answer
    x = 328,533.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.